Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56f1a47c7810b4a2e7505ebf2c83948682d2245f8b2a2a33f931509a118542a9' 
  AND token = 'FLm/nDedO+NmZe2g5b1ZE9zDsf9xEHbWhb25n7Yzbgs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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