Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1974eba7cc1d45eacc98dc332fb78533b96a2afdb0006448384592278a579a2' 
  AND token = 'e4Tahl82YaXaD44h6dEz80uKynbJgbeauKJoEC3vbj0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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