Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ae01f2bac5e7799f943b9b300200bbc62a5919cff21a0cf7b17db4ddf2c6f99' 
  AND token = 'f6aaasAFvnldVogRmvMPewbZNKDmY9rWaNnEUqL4QAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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