Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1055fe90972ccb5b0fd26031242fb0668121433db0df07846548d2d1e33fdfac' 
  AND token = 'q2gZt1OCpFWF3J1q9FBankpkkTwFSci9K5+Nzqd9xfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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