Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06f9efacc68a508fb72dabda9cfdcc778713b45df44bbdc846093b5a480c5dcc' 
  AND token = 'lhe/om4x7INhJw4Yq3p6deeUtf/SdZWMWtI4LyKjPFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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