Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f22c49c29decc63288bf34e2c3d9d5a75eb4bd3419d081198eb92637d464696' 
  AND token = 'JyfFTyyySr/jrY8XzbDEF8vvs1Ux83/YNGLYK94ryTM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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