Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bf7ebbcf43b10d6d98fdc5618e8a5664fc920cad127714e3fd4973061a728d0' 
  AND token = 'j+Jpw612o93WD+1zNScxzinq2D0FSBH3F7lYD7qf468=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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