Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b70abd3260f449f3a3f10731e9947e313ac027a7d74c28ae9f58e07faf0e820' 
  AND token = '/mU1nNSsAb364Q64UUPZh0uglpt1khoaMb/qECaNZ8k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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