Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fea09c6968e12af075395f7882d8919936ea932a34c83515e25baca825813751' 
  AND token = 'xPncTijocFWokDk1g3qIEzEcG6q0s0vOBFB3T7a6E0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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