Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'cb9f3fda279f2ec95fc85882163b6e1b9aab339d18ce95978eee9cf4c11de89a' 
  AND token = 'n8MocAVyivz2+1nKIZ6b5tSoFh9zM68aQDTCaHwnRbs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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