Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e74586682cc0be1720a96f71bf5c348745a956278e07cdd53d9bf9f0d1afd044' 
  AND token = 'GJUTmEKFapz7PQnE7eVfqZ0tf5o6zOAEa3G3y1DBZn4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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