Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96ee8a01c46e9314a3f5868744c9bba527411cb1188e2b4c807cde4edf080a27' 
  AND token = 'CPCwY3J1sBLnxFH978oO+bUfSTJkGYZGuNHQS4jNZU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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