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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad2f352cdddf0e2a048d3b9f8a564074e54bb8e0c907852c7e7458fb162ae5b3' 
  AND token = 'FXLfLuPFDpQ+CFMQA2hYEo97H3/Ow/uOsOWFjoVM26E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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