Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bce4111bf1303446d2fad38ff2e56c144e651ede13e06df3164bcfaffce62585' 
  AND token = 'Pt9X/ZPsrjMXo/uu66MQVGQLgLy47wkozC0xBuIC8cQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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