Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'feb03279796d334443be3ecd90a42f0179a75a46c60d373ba25db420326c1d73' 
  AND token = 'bGS6glzJRSTzCIJ1a1RNc3U0+HU37y/M/AQwAg+Huco=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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