Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c891acc3ef7d8e0cd1d7472dfa0fcbee80f0fddfb13f58a37d2c95c646e5e7e' 
  AND token = 'pt/B+1O+JidlwviRF6FsAi1/0zkMYFBpB+z+stfrHHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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