Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed156e0c7574dd939f245717a8699fbe2f35ebd1521c13c82c9387643a010679' 
  AND token = 'lx0P3lRmPeuqn5nqReP3rCeRI7IeOMQUfXwADXTnztE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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