Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64fadf7fe733564cf1476efc7e25932e8383b1fe335f1cffe10374ec3c67e585' 
  AND token = 'yLZ18JtYlubibZ0Sy/wC62TLAuTde/JBQwIOfJvLE/U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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