Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '775437f137eb00283540679ec5c1730d8d304772e4bafc3fa1ef9f121d7b3fce' 
  AND token = 'gTW6Z2R83cmu+1llfMI/TPdLVHVe/uBii4wvKzLFsAo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}