Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a891c495d373931c95426f45dc6e0a440e07ba6e638c5592a4d1aec3665fbad7' 
  AND token = 'JA5CTSfAWDS6qjdKPQpy1vz7E0Ct9IP3Za75xze8TBk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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