Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e5a4774c386adbd0ac406642d585039c5280fae58cfcc088b546e35fb0795a1' 
  AND token = '5iBObge6rFqfEXtBtzaC0gZAutnPDOH3QzFNCHHK/N0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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