Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '436abd206bd20793b0ab48bb1fce302550dcf8b09e6e302e96ff14969cbfadf0' 
  AND token = '5Ojm0a6N2VbexuEmMATpLa9FDORUCV4T24f6Vl/Qv88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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