Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72f65906f7284a3ec69ba5eb3bed645cbab0a3fe7c496ec9704f7fa14b65e43d' 
  AND token = 'mBLkX1UoLIUfPBCriwQqnjwQrJ4YcIu9D1u4NHVXRC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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