Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '97cad59302bbf6297bb19d687854aad52fc559e01188b1ecd5a5ba30e0dfdced' 
  AND token = '4wJdTNWgoWQC+dVUNXTD/2Cvyl4P2NXsJr1P8bML6LM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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