Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e1b850008df724fcfa8d72cc190b3e41058633bcc0cfb5cda376abceb1f3735' 
  AND token = 'FuX/Wke8T7R6XC4D8NHRu/diEWjMCHDxEb+5abFRjYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}