SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '55d7704622b0f0003c938a1d40025200a2c7bab43d559f73f7eaa384113d3043' 
  AND token = 'iGgVbbn0BnARuEjvvZq10H8H+wZ9A5OIBGaIqKnGQ6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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