Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ce401b2f1acda5338eb98e158e4935e34e0af713e610a424c777b8a6a4a23cc' 
  AND token = 'w1VUjJPT058H4BFMvco/cnCXhxr4EJRTISEDyreT8F0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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