Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '787ec89593ca248f86524a75a62210f1971132fc2ef76c2b37cdc2c9255bdbf7' 
  AND token = 'WQNrADRdVBY+9B2eqyCd5HHT0JsYAtQ39QOSravivU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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