Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02ca8aae60d8a966beb0847e28f2c2b3e4856a857c9b5472b15f9bbf240215e9' 
  AND token = 'QfmtU3c1c5JY1x/9bRGZXETNXhXjZz3ylP9mxYqT2GI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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