Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de09a0a7bced741c3635d81e5e19d1130a92bb61fef788f73ed18f4d22cf0fc1' 
  AND token = 'ZnyCaUv4Y639shtLMfZtuM6/94OfmlOGRXcslv6N7w8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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