Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccca0477064684bc290d03258058f08768ac037260ccb5133297cae8c1942817' 
  AND token = 'bm9S/8W9cMxnyDd0Vk8o1ORpMEPE0rzF5L7KzTt+Xus=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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