Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9326935d532ad1d916e6f20abfd0b90bbcf0b652292169287d34da4dbba8cce' 
  AND token = 'YD865ofPoiC/tGSVl8m3Bt647K1c8X41vk185zmPw8U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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