Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e9a57ef4464fd6276a6c3b0a932b49e2cc34fd5b25dff6a83fcb64cd48bf7c7' 
  AND token = 'p4m/cx0eq4bgHdSpfwcz0iWpQYvegLCHq0HL/LJ9uwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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