Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0633429cf754eca16479a378f33dd66506c19952e92b50eff06f05a84fbcbc9f' 
  AND token = 'j4eD+S4tchHLpaxAavv5T15oEsQRJNTvamteE01JEcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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