Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5cabd45e57d4a1dfe180f21c8ad126f7930837191cce6ff239bdc8c38fbb1bbc' 
  AND token = 'FspvW/xhAL3pnoWoCJrMC+A0fybNn+QDqmpqTmxiitQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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