Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5b91f13b9091c8e5d2dbfa87d6018b6e528676dca087e7f30dfc55d4d61bc2b' 
  AND token = 's9wBOfaedgvqPYSexqGVV3qBhMtdE/noTz0RpMxvL2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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