Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95b2084ccad9700cb8ef968e25152e7de7288e3df38388b6ff3ea64ecfa38a12' 
  AND token = 'UKDvX8Ov9j0gYqNMBJP191n3c7PY9kZhr1x7sMEWUbY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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