Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f660cc998502f3849c2d3eb3d2cc395c2deb5780b4f84a8261c3791286ba018a' 
  AND token = 'yU570+WSzJu17Jwp5sxZF/eet0XNMw5JzpFbHzMTF0Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00114

JSON explain

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