Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '922d1b644de6c0001691efeb4d51af2d085106aada1453dd5bb4e1f2ebd7185c' 
  AND token = '48qVbIULH/TK6c/n+AK+1koSOxlgVN5LDm2y0FFp6Vs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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