Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c13f8e93f4887235dc1b96ca3e09f51bd353657f96eba563eccee030f6ecbdb' 
  AND token = '4mowVYir3iHF0dVsAURoBlJrGkV5+w6xSXti0c2tjBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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