Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61f779ebc804cce5e33fe4cf152e213f63f31f8a23868048de3962e61eff1ead' 
  AND token = 'pwmPY5X0A/lRm7oiiXGEUAoC/Aa/N5l95nqkK13n6B0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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