Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2472aed1085c19aedb0ebb96dffad4fd0b32aaf5a9d4c505f18f13eeadcc6159' 
  AND token = 'SvBjXCIYWW4FvNo2HwzYFbif9jOBRFLDxXcocDCmLvI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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