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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1192da7a8b0ececa162a0ca1c46609ce5be3b1cd739e9c00e19b8328dc71896a' 
  AND token = 'TSbzXibM2DK1gULyiVhrxl87JsEuMHsMOjHSTxEidJU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}