Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f06603793469518e4c4258c84c76c6770169656e77fe86b7452be8969244260c' 
  AND token = 'f+JFiEcUZ4po3aEZFSAXolHjLsi6+MeYQiWbt2MtlmA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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