Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ad8812755e2a67bebd684a0c7ab306832fb207fddadd479f058f6e615f6286e' 
  AND token = 'YQVAWU9WslFNQdg6fXGF2HtAQke6q8Q1wYfDnSbJKik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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