Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '201e106701cf5a09dd51667c30f92f8df864e32a9d91efbbd72eeaeb31032a87' 
  AND token = 'vplagI1FDJTf/oPCF3mqaIcDWbCkEQw9wG3CIjiimGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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