Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3cc4f61f3dc6ff70a4cdd88738a3108e50a9976dce854f7f4284936197c028da' 
  AND token = 'lAst4h3bOMutRr9jmAqOB+WlKdjp6+9EVODwO+R/EYA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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