Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b43204eba58d31382426449a200f5538fd44511f4f3c4b5f801c64ec4e3a9a9' 
  AND token = '+V/T5Lja1Vn+ZSwS7RDzKzD7GwE12g1mgRBC60SrAOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}