Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c73dea889beb7a081d45579032de31dae217c31244fb0c27c808e09feecb5d2' 
  AND token = 'RVmtB/Q7J6CeRKreQzwktZz9r9BOEJt5H/Rvm3TRNDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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