Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c94b8419801e0c8955ddd9dc6809a7f6b69e8cccbaa3c087371bafc89fd830ae' 
  AND token = 'oEQjlXDlZv642qXGBLRZGWCEtsP3SejJ9Ep6vs0lrlI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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