Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '577c7006d0ceaf01825b4ef4272306ce6ff02294d6181fe12cd3ad976ff1508a' 
  AND token = 'BXd0kxlqyk9JV3maHjE3uk4/WBC/KJFdFo1mpSRctVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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