Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f25bd94214b8191eb49b8d24bb9895c35e02740413f125ab50326798cf489f3a' 
  AND token = 'EkRAKwUrXpixMyIE5CIcfofHsdvmk+dtGTPKCv77/7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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