Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd93ad4a839beccaca255eee616762a701f686e8328c052612bcad2d54739bcae' 
  AND token = 'G91ymC7GJwfdG8cUE7muu7SzJaKf9mlno4Ou9pQiPO0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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