Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d2681ba75baa99ffef6e5a1558515be7963a4c373a66221645d6b881619c6f0' 
  AND token = 'dXfuYFfxl3og/xkl57XR3Fc6MCuSTN5qvIfQrWK0Pds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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