Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3b58bea5290159d7a83ccd6fa043456c91fed5ded549a0c47300f21dd23047ba' 
  AND token = 'PhYsA/oxTCpclfGIx8ecHYjxQUolupE+cHF013pFi2g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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