Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b0126021e93e91666c3610102a17984222ca7b76512651acc9696d16771395a' 
  AND token = '08Uj0qEMNYUwfYWBb3FKkVokpmueKvln0yjJ9sbXopk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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