Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80493c3ef0aeff14a5fdf96b9693969b7063195920364808a2121d04f1b194d7' 
  AND token = 'pcwhLc5laNM36pJoNGEBKfaP7M+v+/62tAeuv9PfJUE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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