Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '36d371a4259313e79d678ab53c460da5b1595d5def05edd5bd6a64e2c7e9c133' 
  AND token = 'oNjgbP8jVSCAD+adEz8Wdj7ffG/K6s5lV2fl5+Of2FU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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