Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d81a7e442c7fb522ef0188f172d65a48dc2ef6276be7c4e80be253251f714c7' 
  AND token = 'S2seqbz1sTCacuIkLcejeIUUj//eKZrwUz+m24Qp7AI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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