SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e480ac740c407771ba3cd36b6d66ac1f693985b4ff2431d45b67f78f9a6ba918' 
  AND token = '17M/qGcVyB0KG1iEPyR+FDVh8FW/lESvUKU6kEj4fhQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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