Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10c673d035627d50a38ad77f5179436ba5f5d1d1387653338e1c5ca6dfcd7ecb' 
  AND token = 'hr7QQRLwG0Go9BEYEQuN/Rc2TeW8s0p/K16A8Wxe2fg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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