Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70280575de79f4503d08b927f33abd60e9634e9964edb627bd841cc7052246b5' 
  AND token = 'PoGOpiv2aqX7Dl2b7P21LsuSTl8oB4kzKJRcQRdxdKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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