Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69c00c5fecf37428e06aca9f042c150bd25996a155295c112f1ae7f119c6359e' 
  AND token = 'jIQ9FgsIhxrScILSmHB9RxQ1BjTgg0hYAGa204KgDHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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