Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47084b434342cd7de51a9835b972c4abdc752c98da7a1bbeb6b48113335d1cb6' 
  AND token = 'xOxhuGsiSAe89aZsTY1Fvlg35Tkn+93lTkICw9SNAPQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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