Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2203b2074fbb77e440933ec2657a403e791466586cbf5838472eb4aba329688e' 
  AND token = 'D9e4u3+8A8SfNtlWZUkjr/R6iaJKaCgsD3PTbkXX5RA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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