Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdac2714ec1ad93db3d2f34c89a20f9e0b7501533decd40ef3fa744e6700ce61' 
  AND token = '2gVH3CzcwaxB8OzEHDC14F/nvhN4fvMkI8BOMl7WsbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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