Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8adaea42497f343d5b4529da8d2419e0c9f894e796456c991fb3d9a44eac2c13' 
  AND token = 'odrB7ty7Ulr5TDNibvKXvosPx4MCwt2uJrv7LhdFOOE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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