Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b0de53c69ba68faaa4eb62e0ab8d0aee72213eaf74392474d310032d5786d18b' 
  AND token = 'LNdbWnGWQ8zY1OxEtTaKrLfDgXPF3aWoJVrjaw95ur4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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