Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '622aabbb2facf91a33ddc76efc02fc25c9265236a9d83ded48908a3e4d6adbe9' 
  AND token = 'AikwAMJn0TPcoCTIjQ9TjRJ3NisQ41Zvyc0bFHpcZ98=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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