SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86df5029f72c0c4ef3b50b7ffab8d85763dcf3b499e47ac7633b2b4f88ddec7a' 
  AND token = 'o6tWYI6SaGFjkTZUQwNs/yCweCmlrbB8g5Ln9jJsD9g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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