Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '36626443e1a2fc137b05c8abebd7e45ceae137f0e8dd77c13dafe3d256570e70' 
  AND token = 'ERH9DiqaCZhvcOCtCyJ+0MvU+zl7UxN1kigfF/TcR0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}