Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de3a5e6a19244d7389dfff42d05fa8923c80ad628034a5b686a493dc8804c0e1' 
  AND token = '+HBAojwWQf2WCNTYPGTxrHHW/dmti2MdHFd61IGokYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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