Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '218d6881f9bd89fd64b4b91e46812f4020b364f301fc0dabf5112def78700e0d' 
  AND token = 'N3lIoslfT5v3sGruobq69VxOyYcy5Zl3fVU0pqSpfl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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