Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8ca2c19fe1aecefb077500cbd2294d9a6dab0c2155b234d1dfdc3663e7a621b8' 
  AND token = 'XZo+7oyRQBuasJg9AJTBsNwXP/jt60PbouGL5P7uvsw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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