SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fa1cb2d852cb53dec4e05228c426df5661253c7cb22ac11f1a166fab1410054' 
  AND token = 'w6c74LlR95Ebqyx9Yy+9pW6sBFJeFqkQWt17KubILRM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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