Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7874414920976b5d51d0a52019229c0780501ce9c30e0a1be7ed41259cc10a11' 
  AND token = 'aUeLfSMI+guzCTMe7xQdT33ZhwX0Sy5hThhEd/cei6c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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