Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29f69eb8c3d55abe0f5c7c38800ed7d3ab32b9e8ec5dfe130e3aad4f34c86ad9' 
  AND token = '2fvue248WlTKC9EjHi0j25EyqHNX3RSmBFvtXDEzfEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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