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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a6cc62137b6ec8c1d9a44ba78457d7e08c5b0cad361fc1f226e8f0843fc8b25' 
  AND token = '+QEwtfHhieSbMRTpka0tIUTR9iS133NkCy5p0ohDXHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00101

JSON explain

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